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Isolated Platinum Atoms Stabilized by Amorphous Tungstenic Acid: Metal–Support Interaction for Synergistic Oxygen Activation
Author(s) -
Zhang Qian,
Qin XiXi,
DuanMu FanPeng,
Ji HuiMing,
Shen ZhuRui,
Han XiaoPeng,
Hu WenBin
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201804319
Subject(s) - nanoclusters , catalysis , amorphous solid , oxygen , metal , platinum , materials science , photochemistry , chemistry , chemical engineering , nanotechnology , inorganic chemistry , crystallography , organic chemistry , engineering
Oxygen activation plays a crucial role in many important chemical reactions such as oxidation of organic compounds and oxygen reduction. For developing highly active materials for oxygen activation, herein, we report an atomically dispersed Pt on WO 3 nanoplates stabilized by in situ formed amorphous H 2 WO 4 out‐layer and the mechanism for activating molecular oxygen. Experimental and theoretical studies demonstrate that the isolated Pt atoms coordinated with oxygen atoms from [WO 6 ] and water of H 2 WO 4 , consequently leading to optimized surface electronic configuration and strong metal–support interaction (SMSI). In exemplified reactions of butanone oxidation sensing and oxygen reduction, the atomic Pt/WO 3 hybrid exhibits superior activity than those of Pt nanoclusters/WO 3 and bare WO 3 as well as enhanced long‐term durability. This work will provide insight into the origin of activity and stability for atomically dispersed materials, thus promoting the development of highly efficient and durable single atom‐based catalysts.